Improvement in spark-arresters and dampers



A. WINTON.

SPARK-ARRESTER AND DAMPER. Y

Patented J'an.4,1876-.

' nvenior UNITED STATE PATENT OFFICE.

ALBERT WINroN, on READING, PENNSYLVANIA.

IMPROVEMENT lNSPARK-ARRESTERS AND DAMPERS.

Specification forming part of Letters Patent No. 171,901, dated January4, 1876; application filed October 29, 1875.

To all whom it may concern:

Be it known that I, ALBERrWINroN, of Reading, in the county of Berks andState of Pennsylvania, have invented certain new and useful Improvementsin Spark-Arresters and Dampers; and I do hereby declare that thefollowing is a full, clear, and exact de-' scription thereof, which willenable others skilledin the art to which it pertains to make of thesmoke-stack attached to the top of a boiler. Fig. 2 is a verticalsection of the damper and screen. Fig. 3 is a top "iew of Fig. 2. Fig. 4is a top view of the lower damper, as seen in Fig.1.

This invention relates to an improved sparkarrester, for arrestingsparks in the smokepipe of steam-generators and other furnaces, and toits combination with a graduatingdamper for regulating the draft, aswill be more fully described hereinafter.

A is a part of a boiler-shell, attached to which is the smoke-stack B.In the enlarged portion of this smoke-stack is a conical sheetmetalregister-damper, consisting of an inner case, 0, with three or morelengthwise open-- ings, c c c, as seen in Figs. 1 and 4. Between thebase of this case 0 and the shell of the smoke-stack B the stack iswidened out to give room for the arrester and the damper.

Over this inner case is the case 0, which is rester, which, owing to itsconical form, and

to its position with reference to the damper, serves to arrest anysparks which may pass said damper, and cause them to fall back into thecurrent of flame or heated gases which have passed through the flues ofthe generator, and thus be consumed, or again carried up against thearrester, and thus broken into minute pieces before escaping into theatmosmay be injected into the stack, for the purpose of cleansing thewire screen should it become choked by sparks.

The damper 0 G is regulated to any degree of draft by the handle a,which is outside of the stack, and can be controlled by the engineer.

The advantage of this damper is, that should it bcrequired to check thedraft, which is strongest when the registers c c c are all wide open,then, by turning the handle a, they may be closed to any desired extent,and thus check back the rise of the gases, and retain them within thefurnace, thus causing a slower combustion.

This is a superior method to that in which the dampers are used at thefurnace-door, or entrance to the furnace, as in the latter case there isnothing to retain the heated gases in contact with the surfaces to whichtheir'heat is to be imparted, and hence they are allowed to pass ofl ata much higher temperature than when the draft is controlled in thesmoke-pipe, as in the present case.

I am aware that dampers and spark-arresters have heretofore beenseparately placed in the smoke-pipes of furnaces, and hence I do notclaim, broadly, placing dampers and arresters in that position; but,

Having described my invention, what I claim, and desire to secure byLetters Patent,

1. The combination of the rotating registervalve, moving upon astationary seat, a conical wire screen arranged to surround said valve,and the enlarged portion of a smokepipe, the parts being constructed andarranged taoperate substantiallyas and for the pup posejset forth;2.Tlie combihation of'the eonibal case with the removable case 0 and itswire cover D, substantially as and for the purposeset forth.

In testimony that" I claim the foregoing as l my owninvention, I afiixmy; signature in presenceef two witnesses;

ALBERT WINTON. Witnesses:

JOSEPH OLD, Gno. W. YOUNG:

